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Ratio Ring Kit guide

ratio rings

What’s it for?

The Ratio Ring and Ratio DM Ring are 1x-specific chainrings for 12 and 13 speed drivetrains. The chainrings feature a directional narrow-wide profile to prevent chain drops both while pedalling and when freewheeling over rough terrain. The chainrings are currently available for 5 bolt, 110 mm BCD fitment, SRAM 3 bolt direct mount and SRAM 8 bolt direct mount.

ratio ring compatibility:

The Ratio Ring is designed for use with Campagnolo Ekar* 13 speed chains, and with SRAM Flattop* and Eagle* 12 speed chains. The 5 bolt, 110 BCD pattern is the most common ‘road compact’ chainset bolt pattern. All the Ratio DM Rings are compatible with Shimano HG+* 12 speed chains too. Currently the Ratio DM Ring is only available for SRAM 3 bolt and SRAM 8 bolt cranks.

*AXS®, DoubleTap®, eTap®, SRAM®,SRAM APEX®, SRAM EAGLE®, SRAM FORCE®, SRAM RED®, SRAM RIVAL®, X0®, X01®, XX1® are registered trade marks owned by SRAM, LLC. Eagle™, Exact Actuation™, GX™, NX™, SRAM APEX 1™, SRAM Force 1™, SRAM RIVAL 1™, S-series™, SX™, WiFLi™, X-Actuation™,  XD™, XDR™, XPLR™, XX™, Zero Loss™ are trademarks of SRAM, LLC. The use of these trademarks in the table below is for informative purposes only, and all trademarks remain the property of SRAM, LLC.